Duffy, Tim. <br/><br/>
Essential lotus 1-2-3 : release 2.3  [Books]. 
Tim Duffy. 
 - Belmont, California  Wadsworth Publishing Co.  1992 
 - Pages: 166 
<br/><br/><label>ISBN: </label>0534187250  0.00 
<br/><br/><label>Subjects--Personal Names: </label><br/>Business -- Data processing.<br/>Lotus 1-2-3 (Computer file).
<br/><br/><label>Dewey Class. No.: </label>HF/5548.4.L67  / DUF